21000337468

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43389127}}^1$

素因数の和:43389153

約数の個数: 18

約数和(自身を含む): 40395278168

約数和(自身を除く): 19394940700

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43389127, 86778254, 173556508, 477280397, 954560794, 1909121588, 5250084367, 10500168734, 21000337468]

約数ペア:

[(1, 21000337468), (2, 10500168734), (4, 5250084367), (11, 1909121588), (22, 954560794), (44, 477280397), (121, 173556508), (242, 86778254), (484, 43389127)]